They've long offered an embeddable widget to display your "wants," "has" and "had" lists1, but I wanted to be able to reference each list by URI (at the GDGT site). Co-founder Ryan Block responded to my aforelinked request, and kind of hinted such a thing was coming. Well, it's here.
If you've any interest in psycho-analyzing my gadget "problem," my "had" list might be a good place to start. (Note that this list is still missing a number of my early mobile phones, PDAs, headphones, etc.)